CN109036908A - Switching device with permanent magnet arc extinguishing - Google Patents

Switching device with permanent magnet arc extinguishing Download PDF

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Publication number
CN109036908A
CN109036908A CN201810834360.XA CN201810834360A CN109036908A CN 109036908 A CN109036908 A CN 109036908A CN 201810834360 A CN201810834360 A CN 201810834360A CN 109036908 A CN109036908 A CN 109036908A
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CN
China
Prior art keywords
contact
arc
blow
guide plate
electric arc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810834360.XA
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Chinese (zh)
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CN109036908B (en
Inventor
R.克拉利克
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Schaltbau GmbH
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Schaltbau GmbH
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Publication of CN109036908A publication Critical patent/CN109036908A/en
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Publication of CN109036908B publication Critical patent/CN109036908B/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/04Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/18Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H33/182Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/04Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346Details concerning the arc formation chamber
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20Bridging contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/54Contact arrangements
    • H01H50/546Contact arrangements for contactors having bridging contacts

Abstract

The present invention relates to a kind of switching devices, it has at least one contact and arc blow device associated with contact, wherein arc blow device includes at least one blow magnet for generating arc blow field, and such property that wherein there is the switching arc formed when contact disconnects to put out from contact for blow field.It provides according to the present invention, blow field includes the first field region and the second field region for being arranged near the first field region, wherein the magnetic field line of the first field region is oriented along with the opposite direction of the magnetic field line of the second field region, and wherein blow field further includes making the first field region and the second field region and the transitional region being connected to each other, wherein since the orientation of the magnetic field line in the transitional region the first field region and the second field region towards contact alignment, so that since switching arc in transitional region depend on sense of current be directed in the first field region or the second field region contact, and contact of blowing off in same direction in both cases.

Description

Switching device with permanent magnet arc extinguishing
Technical field
The present invention relates to the switching devices according to the preambles of independent claims 1.
Background technique
Regular tap device includes at least one contact and arc blow device associated with contact.Arc blow device Including at least one blow magnet for generating arc blow field.Blow field have when contact disconnects the switching arc that generates from Such property that contact is put out.
For example, known to regular tap device from EP 2230678A2.This is arc resistant contactor, arc blow device packet It includes permanent magnet and electrically operated puts out both coils.It puts out coil and generally means that switching device is opposite for arc blow field It is heavy, big, and manufacture valuableness.In addition, the blow effect to electric arc depends on current strength, this causes crucial current range. It is touched in the moment of switching and puts out the additional expense of coil needs.
Summary of the invention
The purpose of the present invention is to provide a kind of switching devices of general type, ensure the reliable extinguishing of electric arc, and Regardless of sense of current, while there is simple and cheap construction.
The purpose is met by the feature of independent claims 1.According to it, giving blow field includes the first field region Be arranged near the first field region the second field region when the solution according to the present invention for regular tap device Scheme, wherein the magnetic field line of the first field region is oriented along with the opposite direction of the magnetic field line of the second field region, and wherein Blow field further includes making the first field region and the second field region and the transitional region being connected to each other, wherein from the first magnetic field The orientation for the magnetic field line in transitional region that region and the second field region start is towards contact alignment, so that opening in transitional region Since powered-down arc depend on sense of current be directed in the first field region or the second field region contact, and herein It blows off in same direction in both cases contact.
Solution according to the present invention provides the advantage of, and switching arc is always in same direction from switching device Shell is blown out, but regardless of sense of current, so as to which an arc-control device is only needed to carry out action switch electric arc.Arc blow field can be Here it generates to pure permanent magnetism, so that the use for putting out coil that can be completely left out heavy and expensive.Therefore, according to the present invention to open It is very compact to close device.Therefore, switching arc generates in the center of the transitional region of blow field, and therefore depends on electric current Direction be directed in the first field region or the second field region.Magnetic field line is preferably in transitional region in 180 ° of angle interior wing Shape expansion.When the second field region is formed as the mirror image of the first field region, particularly simple construction is obtained.
Advantageous embodiment of the invention is the theme of dependent claims.
In a preferred embodiment of the invention, the first field region is associated with first passage, and the second magnetic field Region is associated with second channel, and wherein first passage and second channel are extended in parallel and be adjacently positioned, and wherein first Its longitudinal extension part that channel is penetrated transverse to the magnetic field line by the first field region, and second channel is transverse to by the second magnetic Its longitudinal extension part that the magnetic field line of field areas penetrates.
Due to the offer in channel, therefore switching arc can safely and reliably be guided from contact.
In another preferred embodiment of the invention, switching device further includes arc-control device, is arranged so as to switch Electric arc is blown in arc-control device by arc blow device, but regardless of sense of current.Therefore, the reliable extinguishing of electric arc is with cost Effective mode is realized.
In another particularly preferred embodiment of the invention, arc blow device includes the first side to pole plate, second Lateral pole plate, and the center pole plate planted, wherein the first field region is given at the first side between pole plate and center pole plate, And wherein the second field region is given at the second side between pole plate and center pole plate.In this embodiment, blow field can essence Really and in a simple manner generate.In addition, this embodiment achieves advantageous solutions in particularly compact and structure.First In field region and the second field region, magnetic field line is approximately perpendicular to pole plate extension.Above-mentioned channel is at lateral pole plate and center Extend between pole plate.Pole plate is preferably formed as the side wall in channel.
In another particularly preferred embodiment of the invention, the first side is to pole plate and at least one first blow magnet It is associated, and the second side is associated at least one second blow magnet to pole plate, wherein the first blow magnet and second is partially It is opposite to blow magnet polarity.First blow magnet and the second blow magnet are preferably placed between lateral pole plate and center pole plate. In addition, the first blow magnet is preferably directly contacted with the first side to pole plate, the second blow magnet is preferably straight to pole plate with the second side Contact.
In of the invention another also particularly preferred embodiment, center pole plate is at least facing one first of contact The lateral pole plate in end than two is short.It is thus achieved that the particularly advantageous fan out of the magnetic field line in transitional region.? Here particularly advantageously there are two lateral pole plates laterally extending near contacts, so that contact is located at the first side to pole The first end of plate and the second side are between the first end of pole plate.In this way, it is ensured that switching arc is after the formation thereof It is reliably directed to depending on sense of current in the first field region or the second field region.It is further preferred that center pole Plate is to be arranged at the second end opposite with its first end also than two lateral pole plates short.Thus switching arc is entering It is guided again towards center before in arc-control device, i other words, in the symmetrical plane of center pole plate.Thus arc-control device can design At particularly compact.
In another particularly preferred embodiment of the invention, contact includes fixed contact and movable contact, wherein First electric arc guide plate and the second electric arc guide plate are associated with fixed contact, wherein the first electric arc guide plate and the second electric arc guide plate exist Extend between contact and arc-control device, and be conductively connected to fixed contact, wherein third electric arc guide plate and the 4th electric arc are led Plate is associated with movable contact, and wherein third electric arc guide plate and the 4th electric arc guide plate also prolong between contact and arc-control device It stretches, and wherein third electric arc guide plate and the 4th electric arc guide plate are spaced apart with movable contact, and wherein the first electric arc is led Plate and third electric arc guide plate form first pair of electric arc guide plate associated with the first field region, and the second electric arc guide plate and the Four electric arc guide plates form second pair of electric arc guide plate associated with the second field region, and wherein first pair and second pair of electricity Arc guide plate equal bifurcated since contact, so that when switching arc passes through arc blow device blow into arc-control device, switch Electric arc stretches between the first electric arc guide plate and third electric arc guide plate or between the second electric arc guide plate and the 4th electric arc guide plate.Extinguish Switching arc is considerably simplified by its stretching, extension in this embodiment.Third electric arc guide plate and the 4th electric arc guide plate do not connect It is connected to movable contact.Therefore, they can attach to the static component of switching device in a simple manner.It is connected to removable touching The head and quality that therefore needs to accelerate at closing or opening contact is therefore very small.The driver of movable contact therefore can With small size.In order to switching arc can from movable contact to third electric arc guide plate or the 4th electric arc guide plate spark discharge, As long as advantageously there are small―gap sutures between third electric arc guide plate or the 4th electric arc guide plate and movable contact.However, first Electric arc guide plate and the second electric arc guide plate are preferably securely attached to fixed contact, and further preferably with fixed contact integrally It is formed.In this way, it is only necessary to manufacture and install less component.Thus the structure of switching device keeps simple and cheap.
In another particularly preferred embodiment of the invention, switching device includes the first contact and the second contact, In the movable contact of the first contact and the second contact be arranged on common contact bridgeware, and wherein at the first contact Third electric arc guide plate and the 4th electric arc guide plate are electrically connected to third electric arc guide plate and the 4th electric arc guide plate at the second contact.At this It in embodiment, is ensured in switching arc spark discharge to electric arc guide plate in a simple manner, and arrives associated interrupter cartridge It guides between the electric arc guide plate corresponding affected on the route set and thus stretches.
It particularly preferably provides, the third electric arc guide plate at the first contact is conductively connected by first Lai conductively connected in the Third electric arc guide plate or the 4th electric arc guide plate at two contacts, wherein the 4th electric arc guide plate at the first contact is connected by the second conduction Conductively connected corresponding other thirds or the 4th electric arc guide plate at the second contact are fetched, wherein third conductive connection is present in First is conductively connected between the second conductive connection, and wherein the diode of a current direction is only allowed to be preferably located at third In conductive connection.In this embodiment, switching device according to the present invention is not only suitable for DC operation, and is suitable for AC behaviour Make.Even if AC voltage is applied to switching device, switching arc is reliably extinguished.If switching arc produces at the first contact It is raw, for example, then it has the corresponding polarity being directed in the first field region, and wherein electric current is outstanding herein during positive half-wave It is flowed via the switching arc at switching arc, diode and the second contact at the first contact.Complete positive half-wave it Afterwards, any electric current can no longer flow, because diode prevents electric current flowing in opposite direction.Generation, switching arc are consolidated again Collapse.Third, which is conductively connected, may be formed at any point between the first conductive connection and the second conductive connection.For example, it may be possible to It is to provide third between the third and the 4th electric arc guide plate at the first contact to be conductively connected.When third electric arc guide plate and the 4th electricity When arc guide plate is connected in parallel with each other at the first contact and the second contact, construction is made great efforts especially few.This means that at the first contact The conductively connected third electric arc guide plate being oppositely arranged at the second contact of third electric arc guide plate, and at the first contact Conductively connected the 4th electric arc guide plate being oppositely arranged at the second contact of 4th electric arc guide plate.Third electric arc guide plate and the 4th Electric arc guide plate can be connected at two contacts using the polarity of the arc blow field of corresponding change, and intersected with each other.
In another preferred embodiment of the invention, switching device includes the first contact and the second touching being disposed adjacent Point, wherein the center pole plate at center pole plate and the second contact at the first contact has different magnetic polarities.Two touchings as a result, Blow field at point is optimised.Center pole plate at first contact herein preferred alignment at neat with the center pole plate of the second contact It is flat.
In another particularly preferred embodiment of the invention, one or more blow magnets are exclusively permanent magnetism Body.Thus structure is extremely simple and manufactures cheap for the switching device of the invention.If permanent magnet is rare-earth magnet, compact Design can advanced optimize.
Another particularly preferred embodiment according to the present invention, switching device include the first contact and the second contact, In the first contact it is associated with the first arc blow device, and the second contact is associated with the second arc blow device, wherein First contact includes the first fixed contact and the first movable contact, wherein the second contact can including the second fixed contact and second Current collector, wherein the first movable contact and the second movable contact are arranged in the end of common contact bridgeware being oppositely arranged At portion, wherein the first fixed contact is associated at least one first electric arc guide plate, and the second fixed contact and at least one Second electric arc guide plate is associated, wherein the first electric arc guide plate and the second electric arc guide plate corresponding fixed contact and arc-control device it Between extend, and it is conductively connected in corresponding fixed contact, wherein additionally provide third electric arc guide plate and the 4th electric arc guide plate, Wherein third electric arc guide plate and the 4th electric arc guide plate extend to the second removable touching from the first movable contact with arcuate fashion Point, so that third electric arc guide plate and the 4th electric arc guide plate are respectively formed the loop being almost closed, and its together with contact bridgeware In the center pole plate of the first arc blow device and the second arc blow device be arranged in third electric arc guide plate and the 4th electric arc Between guide plate.
The example structure is extremely simple, and therefore can inexpensively produce.The embodiment is simultaneously resulted in be operated in DC The extra high extinguishing potentiality in the two are operated in AC.First arc blow device and the second arc blow device substantially structure Cause with it is symmetrical each other in mirror surface.Therefore, in this embodiment, the magnetic polarity matching second of the pole plate of the first arc blow device The magnetic polarity of the pole plate of arc blow device.End of the end of third electric arc guide plate and the 4th electric arc guide plate with contact bridgeware Portion is slightly spaced, so that contact bridgeware can be mobile about third electric arc guide plate and the 4th electric arc guide plate.When electric arc is from contact When putting out, the end of electric arc is respectively on from the spark discharge of contact bridgeware to third electric arc guide plate or the 4th electric arc guide plate.Work as touching When head bridgeware is arranged in above fixed contact, particularly advantageous construction is obtained.First electric arc guide plate and the second electric arc guide plate It is preferably provided in below corresponding center pole plate, and in the first passage of associated arc blow device and parallel the Extension width on two channel the two.They connect fixed contact with associated terminal contact.Contact bridgeware Corner it is preferably circular, to prolong the service life.
According to particularly preferred embodiment, the first blow magnet and the second arc blow device of the first arc blow device The first blow magnet be arranged in the loop formed by third electric arc guide plate and contact bridgeware, wherein the first arc blow fill Second blow magnet of the second blow magnet and the second arc blow device set is arranged by the 4th electric arc guide plate and contact bridge In the loop that fitting is formed.Thus blow magnet protects in a simple manner and from electric arc.It does not need to use made of ceramics etc. In the guard cover of blow magnet.
In another preferred embodiment, the center pole plate of the first arc blow device and the second arc blow device is with electricity Insulation mode cladding.Coating can be made of suitable plastics or ceramics.
Another advantageous development according to this embodiment, arc-control device include the first arc-control device and the second arc-control device, Wherein the first arc-control device and the second arc-control device are arranged on the side of the shell of switching device being oppositely arranged, so that first The first passage and second channel of arc blow device lead to the first arc-control device, wherein the first of the second arc blow device is logical Road and second channel lead to the second arc-control device.It is particularly preferred that third arc-control device is further disposed at connection two relatively On the upside of the shell of the side of setting, so that the first passage and of the first arc blow device and the second arc blow device Two channels also lead to third arc-control device.As a result, if it is desired, can further improve extinguishing potentiality.Between arc-control device The part of shell electric arc can be protected against by suitable copper sheet as needed.It is further advantageous that if arc-control device can be possible It is completely removed for maintenance purpose from the shell of switching device together with two arc blow devices, it is without hindrance in a simple manner to allow Close to fixed contact and contact bridgeware.The driver of switching device is advantageously located at below two fixed contacts.
According to advantageous embodiment, arc-control device includes the multiple snuff members stacked.Snuff member can be made of ceramic. Snuff member includes at least two wedges facing the end of contact or third electric arc guide plate and the 4th electric arc guide plate respectively Shape side, wherein the wedge shaped side of each snuff member is complementary with the wedge shaped side of each subsequent snuff member, it is equal to be formed With associated two v-depression in two channels.Depending on sense of current, electric arc blows over respective arc blow dress The first passage or second channel set are into one in two v-depressions.Arc-control device includes multiple openings towards outside, So as to can be escaped from the shell of switching device by the plasma that switching arc generates.Opening is preferably by the corresponding female in snuff member Slot is formed.
If contact bridgeware is arranged on the contact carrier being formed of an electrically insulating material according to another preferred embodiment, Then switching capability can further improve, and wherein contact carrier extends between the first contact and the second contact, pass through switching device Shell clear span.Contact carrier is most preferably inserted into the respective slot of shell on two sides so that formed for by The interlayer of the labyrinth seal form for the plasma that electric arc generates.Bellows can also be provided at below contact carrier to prevent from being grounded Failure, otherwise by when switching correspondingly high load due to the flash arc on the yoke plate of the driver to switching device In the case of by electric arc generate plasma and occur.
Switching device is very preferably contactor.
The present invention also provides a kind of arc blow devices for switching device.
Detailed description of the invention
The embodiment of the present invention is illustrated in more detail below in reference to attached drawing, in the figure:
Fig. 1: showing the oblique view of switching device according to the present invention, and wherein shell is opened according to first embodiment,
Fig. 2: showing the cross-sectional plan view of the switching device according to the present invention of Fig. 1,
Fig. 3: showing the switching device of Fig. 1 and 2 in the view of Fig. 1 after the break contact soon,
Fig. 4: showing the expression of Fig. 3, wherein sense of current on the contrary,
Fig. 5: showing the oblique view of switching device of the invention according to the second embodiment,
Fig. 6: the section line VI indicated along Fig. 5 is shown across the section view (section of the switch according to the present invention from Fig. 5 Side view),
Fig. 7: it is (vertical across the section view of the switch according to the present invention from Fig. 5 to show the section line VII indicated along Fig. 5 Section view),
Fig. 8: it shows the section line VIII indicated along Fig. 5 and (is cut across the section view of the switch according to the present invention from Fig. 5 Facial plane view),
Fig. 9: showing the snuff member of the arc-control device of the switch according to the present invention from Fig. 5 to 8,
Figure 10: showing another snuff member of the arc-control device of the switch according to the present invention from Fig. 5 to 8,
Figure 11: two snuff members of slave Fig. 9 and 10 in stacked state are shown.
Specific embodiment
It is applied to following embodiment: similar component indicates similar appended drawing reference.If attached drawing includes not attached The appended drawing reference illustrated in more detail in figure description, then referring to attached drawing description previously or subsequently.
Fig. 1 shows the oblique view of switching device 1 according to the present invention.Switching device is single-pole contactor.In order to clear Chu Qijian, the shell of switching device and various other components shown partially in Fig. 2 do not show that.Fig. 2 shows sections Plan view.Section extends through the axis of component 2.1 and 2.2 shown in Fig. 1.
Contactor 1 includes two fixed contacts 7.1 and 7.2, they are electrically connected to associated terminal contact 8.1, 8.2.Two fixed contacts 7.1 and 7.2 can be electrically connected to each other via contact bridgeware 10.Contact bridgeware 10 is by electromagnetic drive The armature of device 19 actuates, and including two movable contacts 9.1,9.2.When being closed contact, the first movable contact 9,1 is adjacent It connects against the first fixed contact 7.1.Second movable contact 9.2 contacts the second fixed contact 7.2.As mentioned above, do not show The shell of contactor 1 out.In the de-scription, the chassis 20 of switching device is illustrated only, electromagnetic driver attaches to it.
When contact disconnects, switching arc generate respectively the first fixed contact 7.1 and the first movable contact 9.1 it Between, and between the second fixed contact 7.2 and the second movable contact 9.2.
In order to prevent switching device due to switching arc formation and damage, the latter must guide from contact area and put out It goes out.The combination of first fixed contact 7.1 and the first movable contact 9.1 is hereinafter referred to as the first contact.Second contact, 7.2 He The group of second movable contact 9.2 is collectively referred to as the second contact.Switching device includes inclined for each electric arc in two contacts Blowing apparatus, for switching arc to blow off contact.In two arc blow devices it is each respectively with arc-control device 5.1 and 5.2 It is associated.Arc-control device is schematically shown in Fig. 2, and can in a known manner include that multiple extinguishing plates or ceramics extinguish member Part.
The structure of arc blow device is illustrated as first for by the first fixed contact 7.1 and the first movable contact 9.1 The first contact constituted.The blow field generated by arc blow device is in switching device according to the present invention only in a manner of permanent magnetism It generates.It does not need electrically operated to put out coil.Therefore, two permanent magnets 2.1 and 2.2 be only used.Two 2.1 Hes of permanent magnet 2.2 are separately positioned between the arc-control device 5.1 associated with same first contact of the first contact.First permanent magnet 2.1 is herein It is directly contacted with the first side to pole plate 6.1, the first side is arranged on the outside of unshowned switch case to pole plate 6.1.Second Permanent magnet 2.2 equally directly contacts with the second side to pole plate 6.2, and the second side is arranged in being oppositely arranged for shell to pole plate 6.2 On side, and it is not shown in Fig. 1 for the sake of becoming apparent from.Center pole plate 6.3 be located at two lateral pole plates 6.1 and 6.2 it Between, and be parallel to two lateral pole plates 6.1,6.2 and extend, and be also not shown in FIG. 1.Magnetic back iron is separately positioned on two Between a permanent magnet and center pole plate 6.3.Two break iron and permanent magnet are cylindrical.From Fig. 2 it is evident that two structures Part is encapsulated by guard cover 21.
Two polarity of permanent magnet 2.1 and 2.2 are opposite.The South Pole is located at the outside of the first pole plate 6.1 and the second pole plate 6.2 On.The common arctic is located on center pole plate 6.3.Opposite polarity has the effect that, establishes in the second side to pole plate 6.2 Magnetic field between (at right side) and center pole plate 6.3 is precisely oriented into and establishes at the first pole plate 6.1 (at left side) and center Magnetic field between pole plate 6.3 is opposite.The magnetic field line 23 that the fact is also drawn from Fig. 2 is clear.
Pole plate limits two channels between them, both leads to arc-control device 5.1 since the first contact.First Channel 4.1 is here present at the first side between pole plate 6.1 and center pole plate 6.3.Second channel 4.2 be present in the second side to Between pole plate 6.2 and center pole plate 6.3.Two channels transverse to penetrated by one in two opposite polarity magnetic field it Longitudinal extension part.Such as clear from Fig. 2, two lateral pole plates 6.1,6.2 are extended laterally near contacts, wherein center pole Plate 6.3 is somewhat shorter, and terminates before contact.Which results in the transitional regions of the arc blow field at contact.Substantially distinguish At the center of fixed contact 7.1 or movable contact 9.1, magnetic of the magnetic field line perpendicular to two magnetic field in channel 4.1 and 4.2 Field wire extends.Magnetic field line quasi- fan out in 180 ° of angle in transitional region.The direction in the magnetic field in channel 4.1 as a result, On the contrary, the direction for ultimately corresponding to the magnetic field in channel 4.2 until it in transitional region.
If first terminal contact 8.1 is connected to the anode of voltage source now, switching arc 3.1 when contact is disconnected It generates, and is deflected to the right first by the arc blow field in Fig. 2 at first contact, and then into the second side to pole plate In channel 4.2 between 6.2 and center pole plate 6.3.The moving direction of switching arc 3.1 is shown the situation by arrow 24. If first terminal contact 8.1 is connected to the cathode of voltage source, switching arc deflects to the left in opposite direction first.It is then The first side is entered into the left channel 4.1 between pole plate 6.1 and center pole plate 6.3 along the path shown in arrow 25.Two In kind situation, switching arc is then by the driving of arc blow field into arc-control device 5.1.Center pole plate 6.3 is also facing interrupter cartridge It sets and is slightly shorter than two lateral pole plate 6.1,6.2 at 5.1 opposed end.Arc blow field not far before arc-control device 5.1 as a result, Further include transitional region, switch arc is guided to the center of arc-control device 5.1.This allow that arc-control device 5.1 keeps compact.
In the second contact formed by the second fixed contact 7.2 and the second movable contact 9.2, it is inclined to also provide electric arc Blowing apparatus has structure identical with the arc blow device at the first contact.Unique marked difference is two permanent magnets 2.1,2.2 opposite orientation.At the second contact, therefore center pole plate 6.3 marks the South Pole.Two equal shapes of lateral pole plate 6.1 and 6.2 At the arctic in magnetic field.When first terminal contact 8.1 is connected to the anode of voltage source, and Second terminal contact 8.2 is connected to electricity When the cathode of potential source, therefore the switching arc 3.2 generated at the second contact deflects to the left first, and then into left side Into the channel between pole plate 6.1 and center pole plate 6.3.In the case where voltage reversal, switching arc 3.2 is at the second contact Therefore deflection to the right, and enters right side into the channel between pole plate 6.2 and center pole plate 6.3.
It is evident that several so-called electric arc guide plates are provided into directing switch electric arc first from Fig. 1, and secondly at it It is stretched in arc-control device on route.The arrangement of electric arc guide plate should be illustrated first against the first contact below.First Fixed contact 7.1 has the first electric arc guide plate 11.1 and the second electric arc guide plate 12.1.Two electric arc guide plates also be oppositely disposed The first movable contact 9.1 it is associated, that is, third electric arc guide plate 13.1 and the 4th electric arc guide plate 14.1.Third electric arc guide plate 13.1 and the 4th electric arc guide plate 14.1 be not connected to movable contact 9.1 or contact bridgeware 10, but pacify securely It is attached in switching device.Therefore, the gap 22 indicated in Fig. 2 is respectively present in third electric arc guide plate 13.1 and contact bridgeware 10 Between between the 4th electric arc guide plate 14.1 and contact bridgeware 10.First electric arc guide plate 11.1 is together with third electric arc guide plate 13.1 A pair of of electric arc guide plate is formed, it is associated to the first passage 4.1 between pole plate 6.1 and center pole plate 6.3 with the first side.Second Electric arc guide plate 12.1 is identically formed a pair of of electric arc guide plate together with the 4th electric arc guide plate 14.1, with the second side to pole plate 6.2 with Second channel 4.2 between center pole plate 6.3 is associated.Two electric arc guide plate bifurcateds since contact of a pair of of electric arc guide plate prolong It stretches, to be stretched over switching arc in arc-control device on route.
Corresponding electric arc guide plate is also located at the second contact, wherein third electric arc guide plate 13.1 and the 4th electricity at the first contact Arc guide plate 14.1 is electrically connected to corresponding third electric arc guide plate 13.2 and the 4th electric arc guide plate 14.2 at the second contact.This meaning Taste third electric arc guide plate 13.1 at the first contact be electrically connected to the third electric arc at the second contact via electrical connection 15 and lead Plate 13.2.Similarly, the 4th electric arc guide plate 14.1 at the first contact is electrically connected at the second contact via electrical connection 16 4th electric arc guide plate 14.2.There is also the third electric arc guide plates 13.1 at the first contact and the electricity between the 4th electric arc guide plate 14.1 Connection 17, which provide the diodes 18 for only allowing a current direction.It should be noted that diode is only used in contactor It is necessary in the case where AC application.Second fixed contact 7.2 is connected to two electric arc guide plates 11.2 and 12.2.Electric arc guide plate 11.2 form the first electric arc guide plate at the second contact herein.Electric arc guide plate 12.2 forms the second electric arc guide plate.
Hereinafter, the operation mode of electric arc guide plate and corresponding electric connection line is illustrated in more detail.When first terminal touches First 8.1 are connected to the anode of voltage source and when Second terminal contact 8.2 is connected to the cathode of voltage source, produce at the first contact Raw switching arc 3.1 enters the second side into the second channel 4.2 between pole plate 6.2 and center pole plate 6.3.In switch electricity When arc 3.1 generates, it fixed contact 7.1 and the first movable contact for being arranged on contact bridgeware 10 that the latter, which is present in first, Between 9.1.In order to enter channel 4.2, switching arc must be from 10 spark discharge of contact bridgeware to the 4th electric arc guide plate 14.1.Electric current is herein from the first fixed contact 7.1 via the second electric arc guide plate 12.1, first switch electric arc 3.1, the 4th electric arc Guide plate 14.1, electric connection line 17, third electric arc guide plate 13.1, electric connection line 15, the third electric arc guide plate 13.2 at the second contact, The first electric arc guide plate 11.2 at second switch electric arc 3.2 and the second contact flow to the second fixed contact 7.2.The situation is being schemed It is shown in 3.
In the case where applying backward voltage, situation shown in Fig. 4 occurs.Electric current is herein from the second fixed contact 7.2 via the second electric arc guide plate 12.2, second switch electric arc 3.2, the 4th electric arc guide plate 14.2, electric connection line at the second contact 16, third electric arc guide plate 14.1, electric connection line 17, third electric arc guide plate 13.1, first switch electric arc 3.1, at the first contact First electric arc guide plate 11.1 flow to the first fixed contact 7.1.In both cases, first switch electric arc 3.1 and second switch electricity Arc 3.2 is correspondingly stretched by electric arc guide plate, and is finally extinguished in associated arc-control device.
By using the third electric arc guide plate 13.1 at the first contact and the electric connection line between the 4th electric arc guide plate 14.1 Diode 18 in 17, switching device according to the present invention are also adapted to AC operation.If switching arc 3.1 and 3.2 is just half It is formed during wave, then provides state shown in Fig. 3 first.Under the basic frequency of 50Hz, the duration of positive half-wave is 10 millis Second.Accordingly, there exist enough time for switching arc from the spark discharge of contact bridgeware to corresponding electric arc guide plate.It transits to Negative half-wave is only prevented by using diode 18.Sense of current can be no longer opposite.Generation is consolidated again, and thus switching arc can It does not light a fire again in negative half-wave.It the same applies to the case where wherein switching arc generates during negative half-wave.At this In situation, situation shown in Fig. 4 occurs first.Here, it then consolidates and occurs once more, and prevent lighting a fire again for electric arc.
Fig. 5 to 8 shows the second embodiment of switching device 1 according to the present invention.Setting corresponds essentially to Fig. 1 to 4 Switching device setting.Identical components are pointed out by same reference numerals.With the difference of the first embodiment in Fig. 1 to 4 by base It is described below on this.
As shown in Figure 6, compared to the first embodiment being arranged in above two fixed contacts 7.1 and 7.2, contact bridge joint There are two movable contacts 9.1 and 9.2 for the tool of part 10.Electromagnetic driver 19 is located under two contacts as in the first embodiment Side.This has the advantage that the upper part of shell can be completely removed for maintenance purpose, thereby making it possible to freely approaching touching Head.Upper case portion is locked via latch piece 26 shown in Fig. 5.
Switching device according to the second embodiment also includes two contacts.First contact 7.1/9.1 and the first arc blow Device is associated, and the second contact 7.2/9.2 is associated with the second arc blow device.First arc blow device shows in fig. 8 For in the lower half of image, the second arc blow device is located in fig. 8 in the upper half of image.First arc blow device With the second arc blow device be configured essentially to it is symmetrical each other in mirror surface.Therefore, in this embodiment, the first arc blow The magnetic polarity of the pole plate 6.1,6.2 and 6.3 of device matches the magnetic polarity of the pole plate 6.1,6.2 and 6.3 of the second arc blow device.
The arc-control device of switching device 1 includes the first arc-control device 5.1 and the second interrupter cartridge on opposite sides in shell Set 5.2.First arc-control device 5.1 is associated with the first contact 7.1/9.1.The first arc blow dress associated with the first contact The first passage 4.1 and second channel 4.2 set each lead to the first arc-control device 5.1.Second arc-control device 5.2 and the second contact 7.2/9.2 associated.The first passage 4.1 and second channel 4.2 of the second arc blow device associated with the second contact are equal Lead to the second arc-control device 5.2.Third arc-control device 5.3 is further disposed on the upside of shell, wherein the first arc blow The first passage and second channel of device and the second arc blow device also lead to third arc-control device 5.3.If desired, extinguishing Potentiality are improved by third arc-control device.The part of shell between arc-control device can be protected against by suitable copper sheet 32 Electric arc.All three arc-control devices 5.1,5.2 and 5.3 includes several snuff members 29 and 30 being alternately stacked.Extinguish member Part is made of ceramic.In the end for facing contact, they include at least two wedge shaped sides, wherein shown in Fig. 9 The wedge shaped side of first snuff member 29 is complementary with the subsequent wedge shaped side of the second snuff member 30, recessed to form two V-arrangements Slot 31, it is associated with one in two channels 4.1 and 4.2.Second snuff member 30 is shown in FIG. 10, resulting V Connected in star is shown in FIG. 11.Depending on sense of current, electric arc blows over the first passage 4.1 or the of respective arc blow device In one in two 4.2 to two, channel v-depressions.
First fixed contact 7.1 is associated with the first electric arc guide plate 11, and the second fixed contact 7.2 is led with the second electric arc Plate 12 is associated.First electric arc guide plate 11 and the second electric arc guide plate 12 corresponding fixed contact 7.1 or 7.2 with it is corresponding associated Arc-control device 5.1 or 5.2 between extend.They make corresponding fixed contact 7.1 or 7.2 and corresponding associated terminal contact 8.1 or 8.2 connections.First electric arc guide plate 11 and the second electric arc guide plate 12 are arranged below corresponding center pole plate 6.3, and it On the first passage 4.1 of associated arc blow device and parallel second channel 4.2 extension width.This Outside, third electric arc guide plate 13 and the 4th electric arc guide plate 14 are provided.Third electric arc guide plate 13 and the 4th electric arc guide plate 14 are with bow Shape mode extends to the second movable contact 9.2 from the first movable contact 9.1, so that third electric arc guide plate 13 and the 4th electric arc Guide plate 14 is respectively formed the loop being almost closed with contact bridgeware 10 together.As shown in Figure 6, the first arc blow device and The center pole plate 6.3 of two arc blow devices is separately positioned between third electric arc guide plate 13 and the 4th electric arc guide plate 14.Third Electric arc guide plate 13 is located at two 6.3 rears of center pole plate in the expression of Fig. 6, and therefore shown in dotted line in the figure.
The end of third electric arc guide plate 13 and the 4th electric arc guide plate 14 is slightly spaced with the end of contact bridgeware 10, So that contact bridgeware 10 can be mobile about third electric arc guide plate and the 4th electric arc guide plate.When electric arc is put out from contact, switch The end of electric arc is from the difference spark discharge to third electric arc guide plate or the 4th electric arc guide plate of contact bridgeware.Contact bridgeware Corner is preferably circular, to prolong the service life.
First blow magnet 2.1 of the first arc blow device and the first blow magnet 2.1 of the second arc blow device It is arranged in the loop formed by third electric arc guide plate 13 and contact bridgeware 10, wherein the second of the first arc blow device is inclined The second blow magnet 2.2 setting of magnet 2.2 and the second arc blow device is blown by the 4th electric arc guide plate 14 and contact bridge joint In the loop that part 10 is formed.Blow magnet protects in a simple manner and from electric arc as a result,.It does not need to use made of ceramics etc. In the guard cover of blow magnet.
The center pole plate 6.3 of first arc blow device and the second arc blow device is coated in a manner of being electrically insulated.Contact Bridgeware 10 is arranged on the contact carrier 27 being formed of an electrically insulating material.As shown in Figure 7, contact carrier 27 is in the first contact The clear span of the shell of switching device is extended through between the second contact.The correspondence that contact carrier is inserted into shell on two sides is recessed In slot, so that forming the interlayer of the labyrinth seal form of the plasma for being generated by electric arc.Bellows 28 is further arranged To prevent ground fault below contact carrier 27, otherwise by the corresponding high load of switching due to arriving switching device Occurred in the case where flash arc on the yoke plate of driver by the plasma of electric arc generation.
In the second embodiment shown in Fig. 5 to 8, two switches electricity at contact 7.1/9.1 and 7.2/9.2 is generated Arc 3.1 and 3.2 depends on sense of current in the expression of Fig. 8 and deflects to the left to the right or both both first, then blows to phase In the arc-control device 5.1 or 5.2 answered, and then also into third arc-control device 5.3.Depending on sense of current, therefore open Powered-down arc 3.1 and 3.2 is driven across any channel 4.1, or as shown in Figure 6, passes through channel 4.2 into arc-control device.

Claims (11)

1. switching device (1) has at least one contact and arc blow device associated with the contact, wherein described Arc blow device includes at least one blow magnet (2.1,2.2) for generating arc blow field, wherein the blow field has The such property for thering is the switching arc (3.1,3.2) generated when the contact disconnects to put out from the contact, wherein described inclined The second field region that field includes the first field region He is arranged near first field region is blown, wherein first magnetic The magnetic field line of field areas along and the opposite direction of the magnetic field line of second field region orient, and wherein the blow field is also Including the First Transition region for making first field region and second field region be connected to each other, wherein from described The orientation for the magnetic field line in the First Transition region that one field region and second field region start is towards described Contact alignment, so that the switching arc (3.1,3.2) in the First Transition region depends on sense of current from described Contact starts to be directed in first field region or second field region, and herein in both cases along phase The equidirectional contact of blowing off,
Wherein the arc blow device include the first side to pole plate (6.1), the second side to pole plate (6.2) and plant center pole Plate (6.3), wherein first field region is given in first side between pole plate (6.1) and the center pole plate (6.3) Out, and wherein second field region is given in second side between pole plate (6.2) and the center pole plate (6.3) Out,
Wherein the switching device (1) further includes arc-control device (5.1,5.2,5.3), is arranged so that the switching arc (3.1,3.2) are blown in the arc-control device (5.1,5.2,5.3) by the arc blow device, but regardless of the electric current The direction,
Wherein the center pole plate (6.3) is at least at a first end in face of the contact than described two lateral pole plates (6.1,6.2) are short, wherein the First Transition region is near the first end and in first side to pole plate and institute The second side is stated between pole plate, and
Wherein the center pole plate (6.3) is also being arranged at the second end opposite with its first end also than described two sides It is short to pole plate (6.1,6.2), wherein meta position of second transitional region in first side to pole plate and second side to pole plate Near the second end so that the center pole plate be located at the First Transition region and second transitional region it Between, and the wherein switch electricity after passing through the first or second field region and entering second transitional region The lateral pole plate of the arc far from the field region corresponding to the arc-through and towards in second transitional region Heart guidance, to blow in the center of the arc-control device.
2. switching device (1) according to claim 1, which is characterized in that first field region and first passage (4.1) be associated, and second field region is associated with second channel (4.2), wherein the first passage (4.1) and The second channel (4.2) extends in parallel and is adjacently positioned, and wherein the first passage (4.1) transverse to by described Its longitudinal extension part that the magnetic field line of one field region penetrates, and the second channel (4.2) is transverse to by described Its longitudinal extension part that the magnetic field line of two field regions penetrates.
3. switching device according to claim 1, which is characterized in that first side is to pole plate (6.1) and at least one First blow magnet (2.1) is associated, and second side is to pole plate (6.2) and at least one second blow magnet (2.2) It is associated, wherein the first blow magnet (2.1) and the second blow magnet (2.2) polarity are on the contrary, and wherein described Blow magnet (2.1,2.2) is permanent magnet.
4. switching device (1) according to claim 1, which is characterized in that described two lateral pole plates (6.1,6.2) are in institute State that near contacts are laterally extending, so that the contact is located at first side to the first end of pole plate (6.1) and described the Two sides are between the first end of pole plate (6.2).
5. switching device (1) according to claim 3, which is characterized in that the switching device (1) include the first contact and Second contact, wherein first contact is associated with the first arc blow device, and second contact and the second electric arc Blow device is associated, wherein first contact includes the first fixed contact (7.1) and the first movable contact (9.1), Described in the second contact include the second fixed contact (7.2) and the second movable contact (9.2), wherein described first removable touches Head (9.1) and second movable contact (9.2) are arranged in the end of common contact bridgeware (10) being oppositely arranged, Described in the first fixed contact (7.1) it is associated at least one first electric arc guide plate (11), and second fixed contact (7.2) associated at least one second electric arc guide plate (12), wherein the first electric arc guide plate (11) and second electric arc Guide plate (12) extends between the corresponding fixed contact (7.1,7.2) and the arc-control device (5.1,5.2), and conductively It is connected to the corresponding fixed contact (7.1,7.2), wherein additionally providing third electric arc guide plate (13) and the 4th electric arc guide plate (14), wherein the third electric arc guide plate (13) and the 4th electric arc guide plate (14) are removable from described first with arcuate fashion Moving contact (9.1) extends to second movable contact (9.2), so that the third electric arc guide plate (13) and the 4th electricity Arc guide plate (14) and the contact bridgeware (10) are respectively formed the loop being almost closed together, and wherein first electric arc is inclined The center pole plate (6.3) of blowing apparatus and the second arc blow device be arranged in the third electric arc guide plate (13) with Between the 4th electric arc guide plate (14).
6. switching device (1) according to claim 5, which is characterized in that described the of the first arc blow device The first blow magnet (2.1) of one blow magnet (2.1) and the second arc blow device is arranged by the third In the loop that electric arc guide plate (13) and the contact bridgeware (10) are formed, wherein the institute of the first arc blow device The the second blow magnet (2.2) for stating the second blow magnet (2.2) and the second arc blow device is arranged by described In the loop that 4th electric arc guide plate (14) and the contact bridgeware (10) are formed.
7. according to claim 5 or switching device as claimed in claim 6 (1), which is characterized in that the first arc blow dress It sets and is coated in a manner of being electrically insulated with the center pole plate (6.3) of the second arc blow device.
8. according to switching device (1) described in one in the claim 5 combined with claim 2 to claim 7, It being characterized in that, the arc-control device (5.1,5.2,5.3) includes the first arc-control device (5.1) and the second arc-control device (5.2), Described in the first arc-control device (5.1) and second arc-control device (5.2) be arranged in the switching device (1) shell phase At the side of setting, so that the first passage (4.1) and the second channel (4.2) of the first arc blow device Lead to first arc-control device (5.1), wherein the first passage (4.1) of the second arc blow device and described Second arc-control device (5.2) is led in two channels (4.2).
9. switching device (1) according to claim 8, which is characterized in that third arc-control device (5.3) is further disposed at On the upside for connecting the shell of two sides being oppositely arranged of the shell so that the first arc blow device and The first passage (4.1) and the second channel (4.2) of the second arc blow device also lead to the third arc extinguishing Device (5.3).
10. according to claim 8 or switching device as claimed in claim 9 (1), which is characterized in that the arc-control device (5.1, 5.2,5.3 it) can may be completely removed together with described two arc blow devices.
11. according to switching device (1) described in one in claim 5 to claim 10, which is characterized in that the contact Bridgeware (10) is arranged on the contact carrier (27) being formed of an electrically insulating material, wherein the contact carrier (27) is described The clear span of the shell of the switching device (1) is extended through between one contact and second contact.
CN201810834360.XA 2015-01-22 2016-01-22 Switching device with permanent magnet arc extinction Active CN109036908B (en)

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CN109036908B (en) 2020-02-11
CN105826102A (en) 2016-08-03
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US9991073B2 (en) 2018-06-05
US20160217951A1 (en) 2016-07-28
KR20160090770A (en) 2016-08-01
ES2636797T3 (en) 2017-10-09
KR101784586B1 (en) 2017-10-11
RU2629563C2 (en) 2017-08-30
DE102015000796B4 (en) 2017-03-02
DE102015000796A1 (en) 2016-07-28
EP3157032A1 (en) 2017-04-19
ZA201600490B (en) 2017-05-31
ES2778843T3 (en) 2020-08-12
CN105826102B (en) 2018-08-03
JP2016146333A (en) 2016-08-12
RU2016101644A (en) 2017-07-26
JP6706081B2 (en) 2020-06-03

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